Shower Cable Upgrade Minor Works Or EIC

[FAA Greenie]

This is a no brainer. If the current CB rating for the new shower is inadequate and you are having to uprate the cable and hence the CB rating, you are most certainly NOT changing like for like. You are taking one circuit out, and putting a new one in, hence changing the charactaristics at the consumer unit. Full cert, notification, the works.... Only done on a full rewire? If you are replacing a 7KW shower with a 10.5KW, would you leave the 6mm cable in and just put a bigger CB in? Perhaps not.....

 

[Deleted member 26818]

BS7671 makes no use of the term 'like for like'.
There is nothing in BS7671 that suggests that replacing an item of equipment with another which has a higher rating or greater CCC makes the circuit 'new'.
Notification is required because the CCC of the replacement cable differs from the old cable.